Shavuot (shəvŏŏ´ət) [Heb.,=weeks], Jewish feast celebrated on the 6th of the month of Sivan (usually some time in May) in Israel and on the sixth and seventh days in the Diaspora. Originally an agricultural festival celebrating the end of the winter grain harvest (which began at Passover), Shavuot later commemorated the giving of the Ten Commandments to Moses on Mt. Sinai. See Pentecost.
See H. Schauss, Guide to Jewish Holy Days (1938, repr. 1970).